2026年3月17日 / 美国东部时间上午7:29 / CBS/美联社
从加利福尼亚州出人意料的热浪，到中西部部分地区被大雪掩埋，再到东海岸的风暴肆虐，混乱的天气使美国超过一半人口在周一面临极端天气的威胁。
美国一些最大的机场出现大量航班延误和取消，全美近13,000架次航班被取消或延误，中大西洋各州许多学校因预报有强风而提前停课。
周二，航班追踪服务公司FlightAware表示，截至早上6点，已有超过2,100架次航班被取消或延误。此外，由于部分政府停摆持续影响安检人员配置，旅客在机场安检口面临拥堵。
Poweroutage.com称，周二早些时候超过50万户家庭和企业停电，主要集中在密歇根州、宾夕法尼亚州、纽约州和马萨诸塞州。
从夏威夷到纽约市的危险天气威胁
私人气象服务机构AccuWeather计算显示，周一有超过2亿人受到某种危险天气的威胁。威胁范围从西部的极端高温和野火警报，到国家气象局发布的洪水和冰冻预警，涵盖广泛。
周一，中西部北部和五大湖地区的暴雪天气持续，风暴给威斯康星州和密歇根州部分地区带来数英尺厚的积雪。自周六以来，威斯康星州北部小镇Mountain已降雪近3英尺。
给中西部地区带来数英尺降雪的风暴系统已向东海岸移动，沿途降下大雨，伴有强风威胁，并发布了多次龙卷风警告。
在华盛顿，参众两院推迟了投票，联邦机构要求员工提前下班。但到下午晚些时候，预期的恶劣天气并未形成，龙卷风警报也已解除。
严重天气的最大威胁区域从新泽西州延伸至弗吉尼亚州。
纽约市官员警告称，可能出现强阵风，可能导致树枝倒下。周一下午，纽约市一栋三层公寓楼因火灾在强风天气中蔓延，造成包括一名儿童在内的四人死亡。
国家气象局证实，周日密苏里州出现了4起龙卷风，造成屋顶和树木受损，但未报告人员伤亡。
2026年3月16日，北卡罗来纳州夏洛特市遭遇包括EF0级龙卷风在内的强风暴，树木被连根拔起，几户人家受损。Peter Zay/Anadolu via Getty Images
与此同时，夏威夷周末因持续降雨引发山体滑坡，道路被冲毁，房屋和农田被淹。气象部门称，夏威夷所有岛屿均有地区降雨量超过15英寸，毛伊岛部分地区降雨量更是达到30英寸以上。
毛伊岛市长Richard Bissen表示，目前没有人员伤亡报告，工作人员正在评估灾情，预计本周晚些时候还将有大雨。
热穹顶导致气温飙升
西南部的热穹顶将使亚利桑那州本周大部分时间气温飙升至三位数，比正常情况提前很多。
加利福尼亚州也已提前感受到夏日气息。旧金山湾区和萨克拉门托到本周中气温将接近90华氏度。
洛杉矶市长Karen Bass周一表示：“从技术上讲，现在仍然是冬天。这显然不符合三月的正常气候，但这表明气候变化正在影响我们的城市。”
尽管气温可能达到100华氏度，但洛杉矶周边的野火威胁相对较低，因为风力较弱。
菲尼克斯预计本周将连续五天出现三位数高温——DePodwin称，该市历史上3月仅在1988年出现过一次100华氏度的高温。
AccuWeather气象学家Dan DePodwin表示：“这是我们在西南地区有记录以来从未见过的热浪。”
干燥多风的天气助长了内布拉斯加州历史上最大规模的野火。该州三场火灾已烧毁超过1,140平方英里的主要是草原地区。
州长Jim Pillen周一表示：“大自然正在给我们带来一场巨大的考验。”
风暴过后的寒冷天气
与此同时，预报员称东海岸风暴过后将留下剧烈降温天气。
一场风暴在周二上午之前一直影响东北部部分地区。气象预报员警告，低于冰点的风寒天气将蔓延至墨西哥湾沿岸和佛罗里达狭长地带，东南部以及阿肯色州、俄克拉荷马州、路易斯安那州和德克萨斯州部分地区均发布了预警。
在北部，冷锋过后降雨将转为降雪，西弗吉尼亚州中部阿巴拉契亚山脉可能出现大雪。
Blizzards, severe storms, heat wave hit U.S. with array of extreme weather
March 17, 2026 / 7:29 AM EDT / CBS/AP
From a surprising heatwave in California to blizzards burying parts of the Midwest and storms rolling over the East Coast, chaotic weather put more than half the nation’s population in the path of extreme conditions Monday.
Airport delays and cancellations piled up in some of the nation’s largest airports, with almost 13,000 flights canceled or delayed across the U.S., and many schools closed early in the mid-Atlantic states, where high winds were in the forecast.
On Tuesday, tracking service FlightAware said that as of 6 a.m., more than 2,100 flights had been canceled or delayed. In addition, travelers were facing jams at airport security checkpoints as a partial government shutdown continued to strain screener staffing.
Poweroutage.com said more than a half-million homes and businesses were in the dark early Tuesday, mainly in Michigan, Pennsylvania, New York and Massachusetts.
Dangerous weather threats from Hawaii to NYC
The private weather service AccuWeather calculated that more than 200 million people were under threat Monday of some kind of dangerous weather. Threats ranged from extreme heat and wildfire advisories in the West to flood and freeze watches from the National Weather Service.
Blizzard conditions continued in the Upper Midwest and Great Lakes on Monday after the storm walloped parts of Wisconsin and Michigan with several feet of snow. Since Saturday, nearly 3 feet had fallen in the northern Wisconsin town of Mountain.
The storm system that dropped snow by the foot in the Midwest, causing whiteout conditions in some areas, barreled toward the East Coast, dropping heavy rain, threatening high winds and prompting multiple tornado warnings.
Snow falls during a blizzard on March 16, 2026 in Madison, Wisconsin. Joe Timmerman/Wisconsin Watch via Getty Images
In Washington, the House and Senate postponed votes and federal agencies told workers to go home early. But by late afternoon, the expected rough weather had failed to develop and a tornado watch expired.
The biggest threat for severe weather stretched from New Jersey to Virginia.
In New York City, officials warned of the potential for swift wind gusts that could knock down tree limbs. Four people, including a child, died Monday afternoon in New York City after a fire in a three-story apartment building spread during heavy winds.
The National Weather Service confirmed four tornadoes in Missouri on Sunday that caused roof and tree damage. No injuries were reported.
Severe storms, including an FF0 tornado, uprooted trees and caused damage to several homes in Charlotte, North Carolina, on March 16, 2026. Peter Zay/Anadolu via Getty Images
Meanwhile, unrelenting rains triggered landslides, washed away roads and flooded homes and farmland in Hawaii over the weekend. All of Hawaii’s islands had spots with more than 15 inches of rain while parts of Maui were overwhelmed with double that amount, the weather service said.
Maui Mayor Richard Bissen said there were no reports of injuries or deaths and crews were assessing damage, as more heavy rain was expected later this week.
Heat dome to raise temperatures
A heat dome over the Southwest will push temperatures well into the triple digits in Arizona most of the week, much earlier than normal.
California is starting to feel like summer, too. The San Francisco Bay Area and Sacramento will see temperatures pushing toward 90 degrees by midweek.
“This is technically still winter,” L.A. Mayor Karen Bass said Monday. “This is not normal for March, obviously, but it is a sign of how climate change is impacting our city.”
While temperatures are expected to reach 100 degrees, the threat of wildfires around Los Angeles is relatively low because winds will be light.
Phoenix is expected to have five straight days of triple-digit temperatures this week — only once before, in 1988, has the city recorded a 100 degree day in March, DePodwin said.
“This is a heat wave that we have not seen before in recorded history in the Southwest,” said AccuWeather meteorologist Dan DePodwin.
Dry and windy conditions were charging the largest wildfire in Nebraska’s history. Three fires in the state have consumed more than 1,140 square miles of mostly grassland.
“Mother Nature is throwing a doozy at us,” Gov. Jim Pillen said Monday.
Cold weather in storms’ wake
Meanwhile, forecasters said the East Coast storms were expected to leave sharply colder weather in their wake.
A storm stuck around parts of the Northeast until Tuesday morning. Wind chills below freezing were expected to reach the Gulf Coast and the Florida Panhandle with warnings in effect across the Southeast and in parts of Arkansas, Oklahoma, Louisiana, and Texas, forecasters warned.
To the north, rain was expected to change over to snow behind the cold front with heavy snow possible in the central Appalachians of West Virginia.